Datalogic PowerScan PBT7100 Product Reference Manual page 75

ACK NAK Options
ACK NAK Retry Count — cont.
ENTER/EXIT PROGRAMMING MODE
Select ACK NAK Retry Count Setting
Make a mistake? Scan the CANCEL barcode to abort and not
save the entry string. You can then start again at the beginning.
CANCEL
003 = 3 Retries
DEFAULT
Product Reference Guide 65